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Diffstat (limited to 'include/opcode/cr16.h')
| -rw-r--r-- | include/opcode/cr16.h | 437 |
1 files changed, 437 insertions, 0 deletions
diff --git a/include/opcode/cr16.h b/include/opcode/cr16.h new file mode 100644 index 000000000000..b7e3be554fcd --- /dev/null +++ b/include/opcode/cr16.h @@ -0,0 +1,437 @@ +/* cr16.h -- Header file for CR16 opcode and register tables. + Copyright 2007 Free Software Foundation, Inc. + Contributed by M R Swami Reddy + + This file is part of GAS, GDB and the GNU binutils. + + GAS, GDB, and GNU binutils is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at your + option) any later version. + + GAS, GDB, and GNU binutils are distributed in the hope that they will be + useful, but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ + +#ifndef _CR16_H_ +#define _CR16_H_ + +/* CR16 core Registers : + The enums are used as indices to CR16 registers table (cr16_regtab). + Therefore, order MUST be preserved. */ + +typedef enum + { + /* 16-bit general purpose registers. */ + r0, r1, r2, r3, + r4, r5, r6, r7, + r8, r9, r10, r11, + r12_L = 12, r13_L = 13, ra = 14, sp_L = 15, + + /* 32-bit general purpose registers. */ + r12 = 12, r13 = 13, r14 = 14, r15 = 15, + era = 14, sp = 15, RA, + + /* Not a register. */ + nullregister, + MAX_REG + } +reg; + +/* CR16 processor registers and special registers : + The enums are used as indices to CR16 processor registers table + (cr16_pregtab). Therefore, order MUST be preserved. */ + +typedef enum + { + /* processor registers. */ + dbs = MAX_REG, + dsr, dcrl, dcrh, + car0l, car0h, car1l, car1h, + cfg, psr, intbasel, intbaseh, + ispl, isph, uspl, usph, + dcr = dcrl, + car0 = car0l, + car1 = car1l, + intbase = intbasel, + isp = ispl, + usp = uspl, + /* Not a processor register. */ + nullpregister = usph + 1, + MAX_PREG + } +preg; + +/* CR16 Register types. */ + +typedef enum + { + CR16_R_REGTYPE, /* r<N> */ + CR16_RP_REGTYPE, /* reg pair */ + CR16_P_REGTYPE /* Processor register */ + } +reg_type; + +/* CR16 argument types : + The argument types correspond to instructions operands + + Argument types : + r - register + rp - register pair + c - constant + i - immediate + idxr - index with register + idxrp - index with register pair + rbase - register base + rpbase - register pair base + pr - processor register */ + +typedef enum + { + arg_r, + arg_c, + arg_cr, + arg_crp, + arg_ic, + arg_icr, + arg_idxr, + arg_idxrp, + arg_rbase, + arg_rpbase, + arg_rp, + arg_pr, + arg_prp, + arg_cc, + arg_ra, + /* Not an argument. */ + nullargs + } +argtype; + +/* CR16 operand types:The operand types correspond to instructions operands.*/ + +typedef enum + { + dummy, + /* N-bit signed immediate. */ + imm3, imm4, imm5, imm6, imm16, imm20, imm32, + /* N-bit unsigned immediate. */ + uimm3, uimm3_1, uimm4, uimm4_1, uimm5, uimm16, uimm20, uimm32, + /* N-bit signed displacement. */ + disps5, disps17, disps25, + /* N-bit unsigned displacement. */ + dispe9, + /* N-bit absolute address. */ + abs20, abs24, + /* Register relative. */ + rra, rbase, rbase_disps20, rbase_dispe20, + /* Register pair relative. */ + rpbase_disps0, rpbase_dispe4, rpbase_disps4, rpbase_disps16, + rpbase_disps20, rpbase_dispe20, + /* Register index. */ + rindex7_abs20, rindex8_abs20, + /* Register pair index. */ + rpindex_disps0, rpindex_disps14, rpindex_disps20, + /* register. */ + regr, + /* register pair. */ + regp, + /* processor register. */ + pregr, + /* processor register 32 bit. */ + pregrp, + /* condition code - 4 bit. */ + cc, + /* Not an operand. */ + nulloperand, + /* Maximum supported operand. */ + MAX_OPRD + } +operand_type; + +/* CR16 instruction types. */ + +#define NO_TYPE_INS 0 +#define ARITH_INS 1 +#define LD_STOR_INS 2 +#define BRANCH_INS 3 +#define ARITH_BYTE_INS 4 +#define SHIFT_INS 5 +#define BRANCH_NEQ_INS 6 +#define LD_STOR_INS_INC 7 +#define STOR_IMM_INS 8 +#define CSTBIT_INS 9 + +/* Maximum value supported for instruction types. */ +#define CR16_INS_MAX (1 << 4) +/* Mask to record an instruction type. */ +#define CR16_INS_MASK (CR16_INS_MAX - 1) +/* Return instruction type, given instruction's attributes. */ +#define CR16_INS_TYPE(attr) ((attr) & CR16_INS_MASK) + +/* Indicates whether this instruction has a register list as parameter. */ +#define REG_LIST CR16_INS_MAX + +/* The operands in binary and assembly are placed in reverse order. + load - (REVERSE_MATCH)/store - (! REVERSE_MATCH). */ +#define REVERSE_MATCH (1 << 5) + +/* Printing formats, where the instruction prefix isn't consecutive. */ +#define FMT_1 (1 << 9) /* 0xF0F00000 */ +#define FMT_2 (1 << 10) /* 0xFFF0FF00 */ +#define FMT_3 (1 << 11) /* 0xFFF00F00 */ +#define FMT_4 (1 << 12) /* 0xFFF0F000 */ +#define FMT_5 (1 << 13) /* 0xFFF0FFF0 */ +#define FMT_CR16 (FMT_1 | FMT_2 | FMT_3 | FMT_4 | FMT_5) + +/* Indicates whether this instruction can be relaxed. */ +#define RELAXABLE (1 << 14) + +/* Indicates that instruction uses user registers (and not + general-purpose registers) as operands. */ +#define USER_REG (1 << 15) + + +/* Instruction shouldn't allow 'sp' usage. */ +#define NO_SP (1 << 17) + +/* Instruction shouldn't allow to push a register which is used as a rptr. */ +#define NO_RPTR (1 << 18) + +/* Maximum operands per instruction. */ +#define MAX_OPERANDS 5 +/* Maximum register name length. */ +#define MAX_REGNAME_LEN 10 +/* Maximum instruction length. */ +#define MAX_INST_LEN 256 + + +/* Values defined for the flags field of a struct operand_entry. */ + +/* Operand must be an unsigned number. */ +#define OP_UNSIGNED (1 << 0) +/* Operand must be a signed number. */ +#define OP_SIGNED (1 << 1) +/* Operand must be a negative number. */ +#define OP_NEG (1 << 2) +/* A special load/stor 4-bit unsigned displacement operand. */ +#define OP_DEC (1 << 3) +/* Operand must be an even number. */ +#define OP_EVEN (1 << 4) +/* Operand is shifted right. */ +#define OP_SHIFT (1 << 5) +/* Operand is shifted right and decremented. */ +#define OP_SHIFT_DEC (1 << 6) +/* Operand has reserved escape sequences. */ +#define OP_ESC (1 << 7) +/* Operand must be a ABS20 number. */ +#define OP_ABS20 (1 << 8) +/* Operand must be a ABS24 number. */ +#define OP_ABS24 (1 << 9) +/* Operand has reserved escape sequences type 1. */ +#define OP_ESC1 (1 << 10) + +/* Single operand description. */ + +typedef struct + { + /* Operand type. */ + operand_type op_type; + /* Operand location within the opcode. */ + unsigned int shift; + } +operand_desc; + +/* Instruction data structure used in instruction table. */ + +typedef struct + { + /* Name. */ + const char *mnemonic; + /* Size (in words). */ + unsigned int size; + /* Constant prefix (matched by the disassembler). */ + unsigned long match; /* ie opcode */ + /* Match size (in bits). */ + /* MASK: if( (i & match_bits) == match ) then match */ + int match_bits; + /* Attributes. */ + unsigned int flags; + /* Operands (always last, so unreferenced operands are initialized). */ + operand_desc operands[MAX_OPERANDS]; + } +inst; + +/* Data structure for a single instruction's arguments (Operands). */ + +typedef struct + { + /* Register or base register. */ + reg r; + /* Register pair register. */ + reg rp; + /* Index register. */ + reg i_r; + /* Processor register. */ + preg pr; + /* Processor register. 32 bit */ + preg prp; + /* Constant/immediate/absolute value. */ + long constant; + /* CC code. */ + unsigned int cc; + /* Scaled index mode. */ + unsigned int scale; + /* Argument type. */ + argtype type; + /* Size of the argument (in bits) required to represent. */ + int size; + /* The type of the expression. */ + unsigned char X_op; + } +argument; + +/* Internal structure to hold the various entities + corresponding to the current assembling instruction. */ + +typedef struct + { + /* Number of arguments. */ + int nargs; + /* The argument data structure for storing args (operands). */ + argument arg[MAX_OPERANDS]; +/* The following fields are required only by CR16-assembler. */ +#ifdef TC_CR16 + /* Expression used for setting the fixups (if any). */ + expressionS exp; + bfd_reloc_code_real_type rtype; +#endif /* TC_CR16 */ + /* Instruction size (in bytes). */ + int size; + } +ins; + +/* Structure to hold information about predefined operands. */ + +typedef struct + { + /* Size (in bits). */ + unsigned int bit_size; + /* Argument type. */ + argtype arg_type; + /* One bit syntax flags. */ + int flags; + } +operand_entry; + +/* Structure to hold trap handler information. */ + +typedef struct + { + /* Trap name. */ + char *name; + /* Index in dispatch table. */ + unsigned int entry; + } +trap_entry; + +/* Structure to hold information about predefined registers. */ + +typedef struct + { + /* Name (string representation). */ + char *name; + /* Value (enum representation). */ + union + { + /* Register. */ + reg reg_val; + /* processor register. */ + preg preg_val; + } value; + /* Register image. */ + int image; + /* Register type. */ + reg_type type; + } +reg_entry; + +/* CR16 opcode table. */ +extern const inst cr16_instruction[]; +extern const unsigned int cr16_num_opcodes; +#define NUMOPCODES cr16_num_opcodes + +/* CR16 operands table. */ +extern const operand_entry cr16_optab[]; + +/* CR16 registers table. */ +extern const reg_entry cr16_regtab[]; +extern const unsigned int cr16_num_regs; +#define NUMREGS cr16_num_regs + +/* CR16 register pair table. */ +extern const reg_entry cr16_regptab[]; +extern const unsigned int cr16_num_regps; +#define NUMREGPS cr16_num_regps + +/* CR16 processor registers table. */ +extern const reg_entry cr16_pregtab[]; +extern const unsigned int cr16_num_pregs; +#define NUMPREGS cr16_num_pregs + +/* CR16 processor registers - 32 bit table. */ +extern const reg_entry cr16_pregptab[]; +extern const unsigned int cr16_num_pregps; +#define NUMPREGPS cr16_num_pregps + +/* CR16 trap/interrupt table. */ +extern const trap_entry cr16_traps[]; +extern const unsigned int cr16_num_traps; +#define NUMTRAPS cr16_num_traps + +/* CR16 CC - codes bit table. */ +extern const char * cr16_b_cond_tab[]; +extern const unsigned int cr16_num_cc; +#define NUMCC cr16_num_cc; + + +/* Table of instructions with no operands. */ +extern const char * cr16_no_op_insn[]; + +/* Current instruction we're assembling. */ +extern const inst *instruction; + +/* A macro for representing the instruction "constant" opcode, that is, + the FIXED part of the instruction. The "constant" opcode is represented + as a 32-bit unsigned long, where OPC is expanded (by a left SHIFT) + over that range. */ +#define BIN(OPC,SHIFT) (OPC << SHIFT) + +/* Is the current instruction type is TYPE ? */ +#define IS_INSN_TYPE(TYPE) \ + (CR16_INS_TYPE (instruction->flags) == TYPE) + +/* Is the current instruction mnemonic is MNEMONIC ? */ +#define IS_INSN_MNEMONIC(MNEMONIC) \ + (strcmp (instruction->mnemonic, MNEMONIC) == 0) + +/* Does the current instruction has register list ? */ +#define INST_HAS_REG_LIST \ + (instruction->flags & REG_LIST) + + +/* Utility macros for string comparison. */ +#define streq(a, b) (strcmp (a, b) == 0) +#define strneq(a, b, c) (strncmp (a, b, c) == 0) + +/* Long long type handling. */ +/* Replace all appearances of 'long long int' with LONGLONG. */ +typedef long long int LONGLONG; +typedef unsigned long long ULONGLONG; + +#endif /* _CR16_H_ */ |